Mark Harmon

Acting

Biography

Thomas Mark Harmon (born September 2, 1951) is an American actor, producer and director. He is known for playing the lead role of Leroy Jethro Gibbs on NCIS (2003-2021), a role which has earned him six nominations at the People's Choice Awards including a win for Favorite TV Crime Drama Actor in 2017. Since 2008, he has also been a producer and executive producer of the show as well as its' spinoff series NCIS: New Orleans. His character of NCIS special agent Leroy Jethro Gibbs was introduced in a guest starring role in two episodes of JAG, and continued on the spinoff show NCIS. He had a rec...

Known For

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7.6

NCIS

Leroy Jethro Gibbs

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7.6

NCIS

Executive Producer

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7.4

Family Guy

Leroy Jethro Gibbs (voice)

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6.1

The Late Show with Stephen Colbert

Self - Guest

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5.2

The Late Late Show with James Corden

Self

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7.5

The Tonight Show Starring Johnny Carson

Self

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6.4

The Kelly Clarkson Show

Self

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7.0

Saturday Night Live

Self - Host

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7.3

JAG

Leroy Jethro Gibbs

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8.2

The West Wing

Simon Donovan

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Mark Harmon

Biography

Known For

NCIS

NCIS